Safety pressure device



Eufiy 29 1924.

F. WINDISH SAFETY PRESSURE DEVICE Filed Deer vwewtoz (Insane/1 Patents July 29, 1924.

TED

FRED WINDISH, F HARTFORD, CONNECTICUT, ASSIGNOR 0F ONE-HALF TO MARTIN RUDZIK, OF HARTFORD, CONNECTICUT.

SAFETY PRESSURE DEVICE.

Application filed December 4, 1923. Serial-No. 678,414.

To all whom it may concern:

Be it known that I, FRED WINDISH, citizen of Austria, residing at 104 Wilson Street, Hartford, in thecounty of Hartford and State of Connecticut, have invented certain new and useful Improvements in Safety Pressure Devices, of which the following is a specification.

This invention relates to safety pressure devices which can be inexpensively employed in connection with automobile tires; for example for inflating the inner tube thereof.

Among the objects of the invention are the provision of an article of this nature, which is quite simple in construction and can be inexpensively produced.

In the drawing accompanying and forming part of the present specification, I have represented in detail a form of embodiment of the invention which, to enable those skilled in the art to practice the same, will be set forth fully in the following description. Obviously, I am not restricted to this exact disclosure. I may depart therefrom in a number of particulars within the scope of the invention defined by the claims following said description.

Referring to sand drawing:

Fig. 1 is an elevation of a device including the invention;

And Fig. 2 is a longitudinal vertical central section.

Like characters refer to like parts in both views. 1

As shown the article includes in its construction a body portion, such as 2, having a transverse foot 3 at its lower end, the foot and the body portion having passages and the entire structure being thus far noted by M an inverted T form. The passage 4 which extends longitudinally of the body portion is narrowed near its lower end, as at 5, to present the seat for a plug valve, such as 6, which includes in its construction a' cylin- $5 drical body, the outer portion of which is tapered, as best shown in Fig. 2.

Fitted into the upper end of the body is a plug, as 7 which as represented is of cylindrical formation and having a head 8 at its upper end to facilitate its insertion and removal. The shank of the plug 7 has in it a passage 9 within which fits a coiled spring 10, the upper end of which bears against the bottom of the cavity or chamber 9 and the lower portion of which is disposed around the stem 12 of the valve 6, the lower end of the spring acting against the head end of the valve 6 to normally seat the valve against the seat 5, as represented in Fig. 2. In the body is a slot 14 elongated and in which projects the extension 15 from the stem 12, the extension 15 having on its face a pointer 16 which is adapted to come opposite the marks 17 on the outer surface of the body 2, these marks 17 being graduated in tenths and the topmost mark being such character 10.

The head end of the body may receive the circumferentially roughened cap 18.

The foot receives within one end a threaded plug 19 and in the opposite end a threaded plug 20.

Extending centrally through the plug 19 is the fitting 21, the head of which has an interiorly threaded bore 22 which is peripherily roughened as shown in Fig. 1. The threaded surface 22 is for attachment to the nipple of the inner tube of an automobile tire, which is to be inflated, the pipe connection being connected with the threaded portion 23.

The body 2 may have within it the circular relief port 24; normally closed by the valve 6, as shown in Fig. 2.

The action of the appliance is practically as follows: Seventy pounds is generally the pressure to which the average inner tube is subjected. In this event the plug 21 will be connected by hand with the nipple of the inner tube and a pump will be connected with the threaded portion 23 of the nipple 20 and air introduced into the tube.

When seventy pounds pressure in the tube is reached the valve 6 will be thrust open by the compressed air which will permit the air to flow to atmosphere by the relief passage or hole 24 which will signify to the user that the correct pressure is in the tube.

The extension 16 which has on its face a pointer 16 presents an integral part of the sleeve 14 fittedin an annular groove 14 in the forward or lower end of the stem 12. This is quite an advantageous feature and results in the production of the article in an inexpensive manner.

What I claim is: N

A body portion having a longitudinally extending bore and also having a lateral outlet furnished with a threaded bushing, a plug in the body portion, a valve in the 110 loore, for controlling the outlet and having a stem extending into said bore, a spring around the stem bearing at its ends against the valve and against the plug, the body having a longitudinal slot, a scale on the body' extending longitudinally of the slot, the

plug having an annular groove at its end, and an annular member fitted in the annular a scale and the extension having a pointer to traverse sald scale.

In testimony whereof, I afix my signature.

FRED WINDISH. 

